<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<script src="js/vue.js"></script>

<body>
    <div id="app">
        {{ message }}
    </div>
    <div id="app2">
        <span v-bind:title="message2">
            鼠标悬停查看，娃哈哈
            jkjkjkjk
        </span>
    </div>
</body>
<script>
    var app = new Vue({
        el: '#app',
        data: {
            message: 'Hello World!'
        }
    });
    var app2 = new Vue({
        el: '#app2',
        data: {
            message2: 'message2' + new Date().toLocaleString()
        }
    });
</script>

</html>